This book focuses on natural products, in particular medicinal plants and their derived products, as an indispensable source of bioactive molecules that serve as either drug candidates or lead compounds for drug design and discovery . There are several advantages for plant-derived therapeutics, including wide availability, diverse pharmacological actions, and a generally good profile of safety and tolerability. Over the recent years, there have been numerous reports from clinical studies testifying the efficacy and safety of medicinal plants and phytochemicals in treating human diseases. A...